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What's New?

Is it New Bike Time? Always!
It's pretty obvious this is when people are out on the roads & trails having fun on their new bikes. This is a great time for a new bike because even the worst "winter" you'll see in the Bay Area offers plenty of nice days for riding, and who wants to waste a nice day? Chain Reaction features the very best bikes from Trek & Electra, as well as the highest-quality travel bikes from Bike Friday. Road, Mountain, Hybrid, Electric assist, Kids... we've got them all. Probably the best selection in a single location you'll find anywhere on the peninsula too.
Got a bike that needs repairs?
We can handle that! If you purchased your bike from us, remember that you can bring it in anytime, without calling ahead, for minor on-the-spot adjustments of brakes, gears and wheels (at no charge; this is included with any bike purchased from us). For flat tires, again, no appointment needed. Where possible we try and do flat tires while you wait, but there will be times that's not possible. At most you will be leaving your bike overnight. For normal (bigger) repairs, calling ahead to schedule an appointment might make sense because the repair backlog at better shops sometimes goes from overnight to 5 days in the blink of an eye!
It's E-Bike time at Chain Reaction! E-Bikes are the latest thing; find out why! Commute to the office without needing a shower, bring home the groceries (even if you live on top of a hill!) or keep up with your obsessive-cyclist partner. Prices start at just $1299 (Oyama folding E-bike) up to the incredible Trek Super Commuter 8 at $5199.


Disc Brakes for Road Bikes- Making the right choice

Disc brakes are the latest thing for road bikes. But are they the right choice for you? We discuss the trade-offs including benefits, cost, added weight and maintenance requirements.

Just a few of the bikes we sell. One of them is just right for you!

Trek FX 2 Women's
$499.99 $539.99 7% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Electra Townie Original 7D EQ Ladies'
$559.99 - $609.99 $599.99 - $649.99 Up To 6% Savings
Lucky number 7 means gears a-plenty for most general riding. With a Shimano...
Trek X-Caliber 7
$899.99 - $949.99 $1,019.99 Up To 7% Savings
X-Caliber 7 is the perfect entry point to fast cross country riding and rac...
Electra Loft 3i Ladies'
$499.99 $539.99 7% Savings
Just enough gussy to get you up. The 3i is an all-weather, low-maintenance ...
Trek FX S 4 Women's
$1,099.99 - $1,149.99 $1,199.99 Up To 4% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek FX 2
$499.99 $539.99 7% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek FX 3 Women's
$619.99 - $649.99 $689.99 Up To 6% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek Dual Sport 2 Women's
$619.99 $659.99 6% Savings
Dual Sport 2 Women's is a go-anywhere hybrid bike that performs on a variet...
Trek 1.2 C H2 58cm - LAST ONE!
$799.99 $929.99 14% Savings
Trek's 1.2 C is a shining example of trickle-down technology. The heart and...
Electra Savannah 1 (20-inch) - Girl's
$299.99 $319.99 6% Savings
Remember when you first learned how to ride? Remember riding to your friend...
Trek Emonda SLR 8 Disc
$6,499.99 $6,999.99 7% Savings
Trek’s lightest production road line ever Every detail of the Emonda lin...
Trek Marlin 6
$559.99 - $589.99 $629.99 Up To 6% Savings
Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday...